Natura - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Animale Regnum nom. inval. - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Pisces nom. inval. - fishes see Class Pisces Linnaeus, 1758
           Order Chondropterygii nom. inval. see Order Nantes Linnaeus, 1758
             102 Genus Raja nom. inval. see Genus Raja Linnaeus, 1758
             103 Genus Sqvalus nom. inval. see Genus Squalus Linnaeus, 1758
             103.0 Genus Squalus nom. inval. see Genus Squalus Linnaeus, 1758
             104 Genus Acipenser nom. inval. see Genus Acipenser Linnaeus, 1758
             105 Genus Petromyzon nom. inval. see Genus Petromyzon Linnaeus, 1758